NetBpfLoad: do not log bpfGetFdMapId() failures on 4.9

This is entirely expected due to lack of implementation in <4.14.

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ifebe6843dc77b1b9a506c61239dcebe7262d0869
1 file changed